1) calcium tungstate crystal
钨酸钙晶体
2) Nd-doped calcium tungstate laser crystal
掺钕钨酸钙激光晶体
3) PbWO_4 crystal
钨酸铅晶体
1.
Simulations on the electronic structure and optical properties for the perfect raspite-structured PbWO_4 crystal;
斜钨矿结构钨酸铅晶体电子结构和光学性质的模拟计算
2.
2)MeVγ-ray of the PbWO_4 crystals is about 1∶2,the ratio of n/γ of the PbWO_4 crystals is about 1∶6 and the decay time of the PbWO_4 crystals is about 6ns.
2MeV)、DPF中子源和直线拟合方法,通过实验测定和理论计算,得到了钨酸铅晶体对ST-401闪烁体的γ相对灵敏度(约为1∶2),晶体的中子与γ灵敏度之比(约为1∶6)和晶体的衰减时间(约为6ns)。
3.
But the application of PbWO_4 crystal is limited to high-energy physics because of its low light yield.
因此,提高钨酸铅晶体的光产额以使其在PET装置等低能领域获得应用已成为近年来钨酸铅晶体的研究热点。
4) PWO crystal
钨酸铅晶体
1.
The performances of PWO crystals obtained are as follows: optical transmittance more than 60% at 420nm and more than 25% at 360nm, light yield more than 9 p.
用改进的垂直坩埚下降法成功地生长了高质量的钨酸铅晶体,晶体毛坯的尺寸为28min×28mm×360mm;晶体的生长工艺参数为:籽晶取向[001];下降速度 0。
2.
This paper describes the scintillating properties of lead Tungstate Crystal (PWO), including excitation spectrum, fluorescent spectrum, transmission, light yield, decay time, radiation damages and recovery , light collection un-uniformity, timing resolution and energy resolution of PWO crystal matriex for high energy photons and electrons.
叙述了国产钨酸铅晶体(PWO)的主要性能,包括激发光谱和发射光谱,透过率,光产额,发光衰减时间,辐照损伤及其恢复,收光均匀性,以及时间分辨率和PWO晶体阵列对高能光子的能量分辨。
5) lead tungstate crystal
钨酸铅晶体
1.
Lead tungstate crystal (PWO), a key component of the electromagnetic calorimeter of CMS, must meet high quality requirements in order to attain the claimed energy resolution.
钨酸铅晶体是新一代对撞机谱仪CMS的电磁量能器的主体。
2.
results for several full size (23 cm length) lead tungstate crystals under Co 60 γ ray side irradiating, investgating the light yie.
大型强子对撞机 (LHC)运行时具有很高的辐射背景 ,为达到所要求的电磁量能器的测量精度对研制中的钨酸铅晶体的抗辐照性能提出了很高的要求 。
6) PbWO 4 crystal
钨酸铅晶体
1.
By the way of Positron annihilation lifetime and X-ray photoelectron spectra,the defects of PbWO 4 crystal was discussed,which is influenced by rich-W and rich-Pb.
利用正电子湮没寿命谱 (PAT)和X光电子能谱 (XPS)的测试手段 ,对不同化学配比钨酸铅晶体中缺陷进行研究 ,结果表明丰W样品增加晶体中铅空位 (VPb)浓度 (物质的量比 )、而丰Pb样品则减少晶体中VPb浓度 。
补充资料:掺钕钨酸钙激光晶体
分子式:CaWO4:Nd3+
CAS号:
性质:白钨矿型结构,四方晶系。空间群C4h6-I14/a。密度6.120g/cm3。熔点1585℃。莫氏硬度4.5,热膨胀系数11.2×10-6/℃(‖a)和18.7×10-6/℃(‖c),沿c轴的热导率33W/(m·K)。折射率n0=1.918,ne=1.934,荧光寿命0.17ms。低温荧光谱显示多中心结构。用提拉法生长晶体。用作连续器件和高重复频率器件的工作物质。
CAS号:
性质:白钨矿型结构,四方晶系。空间群C4h6-I14/a。密度6.120g/cm3。熔点1585℃。莫氏硬度4.5,热膨胀系数11.2×10-6/℃(‖a)和18.7×10-6/℃(‖c),沿c轴的热导率33W/(m·K)。折射率n0=1.918,ne=1.934,荧光寿命0.17ms。低温荧光谱显示多中心结构。用提拉法生长晶体。用作连续器件和高重复频率器件的工作物质。
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